土壤质量评价指标及其时空变异

综述了土壤质量的概念及其研究进展,并探讨了土壤质量指标的选择原则,得出不同土壤的评价应以土壤的功能为基础并采用不同的标准。在以往研究中,人们一直强调以土壤物理、化学特性作为土壤质量指标。目前,国内外关于土壤生物学指标的研究日益增多,一些参数作为生物指标已表现出很大的潜力并成为系统稳定性的早期预警和敏感指标。之后阐述了国内外土壤质量指标空间变异的研究现状,探讨了该领域研究中存在的问题,展望了国内外土壤空间变异的研究前景。

Soil quality assessment indicators and their spatial-temporal variability

The concept of soil quality was reviewed and the method of selecting soil quality assessment indicators discussed.Soil quality assessment is based on soil function with different criteria in accordance with soil types.Major emphasis is on the use of soil chemical and physical properties as indicators of soil quality.At present,investigations on soil biological parameters are only gaining grounds.Soil bio-indicators are showing great potential to become early warning and sensitive indicators of soil stree or perturbation.Research 'protocol'of spatial variability in soil quality is presented and exiting problems discussed.Finally,future research direction on soil quality spatial variability at home and abroad is forecasted.